ZIP Code 12056 — Duanesburg, NY
12056 is a standard (street delivery) ZIP code serving Duanesburg, New York, in Schenectady County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 12056 at a glance
| ZIP code | 12056 |
|---|---|
| Primary city | Duanesburg |
| State | New York (NY) |
| County | Schenectady FIPS 36093 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,695 |
| Coordinates | 42.767610, -74.090500 |
How ZIP+4 works in 12056
The four digits after the hyphen encode a delivery segment inside 12056. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 12056 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 12056.
| ZIP | City | Distance |
|---|---|---|
| 12306 | Schenectady, NY | 4 mi |
| 12053 | Delanson, NY | 5 mi |
| 12009 | Altamont, NY | 5.6 mi |
| 12137 | Pattersonville, NY | 6.5 mi |
| 12305 | Schenectady, NY | 7.7 mi |
| 12085 | Guilderland Center, NY | 7.8 mi |
| 12150 | Rotterdam Junction, NY | 7.8 mi |
| 12307 | Schenectady, NY | 8.4 mi |
| 12303 | Schenectady, NY | 8.4 mi |
| 12308 | Schenectady, NY | 9.4 mi |
| 12302 | Schenectady, NY | 9.6 mi |
| 12304 | Schenectady, NY | 9.8 mi |
Questions about 12056
What is the ZIP+4 code for 12056?
12056 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 12056, you need to look up a specific street address to get them.
What city is 12056?
12056 is assigned to Duanesburg, New York, in Schenectady County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.